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 ###Instrução: Focal plane in ft (m) is 43ft (13.1m) is the first date lit.
 ###Tabelas: CREATE TABLE appearances_in_the_tour_de_france (appearances_in_the_tour_de_france_id AUTO_INCREMENT PRIMARY KEY, Year INT, Stage INT, Category INT, Start VARCHAR, Finish VARCHAR, Leader at the summit VARCHAR) CREATE TABLE record_vs._sec_opponents (record_vs._sec_opponents_id AUTO_INCREMENT PRIMARY KEY, Missouri vs. VARCHAR, Overall Record VARCHAR, at Columbia VARCHAR, at Opponent's Venue VARCHAR, at Neutral Site VARCHAR, Last 5 Meetings VARCHAR, Last 10 Meetings VARCHAR, Current Streak VARCHAR, Since Joining SEC VARCHAR) CREATE TABLE top_goalscorers (top_goalscorers_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Goals INT, Caps INT, First cap VARCHAR, Latest cap VARCHAR) CREATE TABLE final_leaderboard (final_leaderboard_id AUTO_INCREMENT PRIMARY KEY, Place VARCHAR, Player VARCHAR, Country VARCHAR, Score VARCHAR, To par VARCHAR, Earnings ( $ ) INT) CREATE TABLE list_of_lighthouses_in_the_philippines (list_of_lighthouses_in_the_philippines_id AUTO_INCREMENT PRIMARY KEY, Lighthouse VARCHAR, Location VARCHAR, Province/City VARCHAR, Date First Lit VARCHAR, Tower height in ft (m) VARCHAR, Focal plane in ft (m) VARCHAR, Current Status VARCHAR, Current Condition/ Description VARCHAR)  
SELECT Date First Lit FROM list_of_lighthouses_in_the_philippines WHERE Focal plane in ft (m) = 43ft (13.1m)